Mold.



E. (5. STONE I EL J. SIDDELEY.

MOLD.

APPLICATION FILED MAII. Is. I9I5.

1,212,839, Patented Jim.16,1917.

- ments in Molds, of which the TED STATES PAT-T Enron. N

EDWARD GILES STONE AND ERNEST JOSHUA S'IDDELEY, or SYDNEY,v NEW SOUTH f 7 WALES, AUSTRALIA.

'MOLD speeincation'qf Letters Patent." pafented Jan. 16, 1917 Original application filed March 13, 1913, Serial 110.754,00. i Divided and this vapplication' filed March 1B,

. 1915; Serial No. 15,316.v

To all whom it may concern Be 1t known that we, EDWARD GILEs STONE and ERNEST' JOSHUA SIDDELEY, cltizens of the Commonwealth vof Australia, residing.

at Sydney, in the State of New South Wales and Commonwealth of Australia, have invented certain new and useful' Improvefollowing is Va specification. l

This is a division of .our applicationSe-v rial No. 754,006 filed March 13th, 1913.

The invention herein described relates to molds of the flexible, knock-down core type for molding pipes and like. hollow objects from cement, concrete andthe like s elf setting plastic materials, the mainl objects be-v ing to provide a mold which can be quickly assembled, which will allow therapid es-.

cape of air and moisture equally from all parts of the mold and from the plastic'material supplied thereto under pressure, which 4shall be very strong and durable fand have' tight joints, which shall be easily movable into and out of feeding position, and which shall have means for easily uprighting the .mold from its horizontal position on the transporting means to a vertical position on the ground.

Other objects are to provide easy and accurate means for positioning reinforcing material, easy means for raising andA supporting the end blocks, easy means for positioning or centering the core, easyl means for quickly placing and removing expandf,

ing blocks or wedges between the edges of the core, and means for forming grooves in the ends of the article molded, all ofl which objects, among others, are accomplishedby the arrangement, construction and combination of parts to be hereinafter more fully Set forth and described. v

The mold is easilymovable and vispreferably to be used in connectionv with a Stationary supply of plastic material fed under compressed air and isso illustrated.

In the accompanying drawings: -Figure l represents a View of a mold embodying our invention and its transporting truck, partly in side elevation and partly in longitudinal central section; the same being in position under the supply of plastic material; Fig. 2, a vertical cross-section on line 2-2 of Fig. l; Fig. 3, a similar view, the top section of the outer part being slightly raisedand the upper section of the inner part or core being slightly crowned, the truck being omitted; Fi-g.- 4, a detail plangview showing part of the longitudinal wedge bars and the Swivel screw links to produce expansion and contraction 4or crowning, fragments of the inner upper molding plate or core and the molded article `being likewise shown;

F1 5, a frontelevation of'an end cover or bloc, showing also the ends of the positioning rods for reinforcing material; and Fig. 6, a ver-` 'tical cross-section on line 6-6 of Fig. 5.

Referring now in detail to the drawings, A indicates the pipe, broken away, forming communication between a source of supply of compressed air, not shown, and the container or. reservoir B for the plastic material to be fed through tubes or conduits C into the feed or supply openings l of the mold, said tubes being provided with movable parts which may be raised or lowered into close contact` with the mold and secured in such position by any suitable means. Thus farl the description is general', relating mainly to lmatter described in detail and claimed in the parent application.

The 'mold now described and shown in the drawings is constructed to form oviform pipes, thoughl the invention may be employed in making a'variety of hollow objects, and it is' vconstructed as follows of six principal parts, namely, the bottom outer Section 2, the top f section Y3, which may be constructed Ofreinforced concrete or made whollyof metal or other' suitable material, the bottom inner section 4: and the topinner section 5 both of metal bent tothe desired shape and togetherforming a' core, and the end Acovers 6 and' 7 which are preferably madey ofwmetal cast to the desired Shape. The 4bottom section 2 of themold is supportedgupon the transverse bearers 8 of the under carriage, andkeptin position by the cradle chocks9. y Center trunnions 10v securedto the-side of the mold and attached bythe linksll to' pivot pins 12 attachedl moval. To accomplish this, one pair ofthe links 11 may be released from the frame and used as lifting'sli'ngs. f The other pair` of links, being secured both to the trunnion and the frame, Will move with the mold as lit is being tilted. 3 would .be seated upon the jointing pieces 13 shown in two parts'vheld together by the vertical bolts 14 having the wedges 15 for speedy connection and detachment, and "the screw-threaded nuts V16 for tightening purposes. -Each half is strengthened to with-' stand the air pressure by the bands 17 and 18, 17 being the lower, and 18 the upper, and are pierced through with small pipes or tubes 19 to provide escape for the air and moisture during the molding operation, these pipes or tubes being located at regular` intervals throughout both halves or sections 2 and 3. The bottom section 4 of the core, when placed in position, would have its. jointing edges approximately the same level as the outer bottom section 2, and is provided With'longitudinal stiifening reinforcing angle-iron iianges 20, to which are attached, by the pins 21, anydesired number of swivel links 22, having oppositely threaded adjusting screws 23, by which the part 4 may be expanded or contracted to obtain the correct adjustment when setting out the annular space necessary to obtain the desired thickness of the article to be molded. The upper part 5 of the core is of similar construction, and is provided with similar means of contraction and expansion,

and between the edges of these parts orsections 4 and 5 are inserted wedge shaped bars 24. These are secured by through pins 25 to the sti'ening flanges 20 (Fig. 1) and are capable of adjustment by means of the appliances associated with the sections 4 and 5 of the core.

As a means of stii'ening or reinforcing upper section 4, the ribs 26 are secured to the inner face of the metal at regular intervals, leaving a portion of the metal unstiffened, so that the collapsing or crowning operation shown in Fig. 3 may be readily accomplished byv means of the HeXibility of the` section as a whole. The collapsing operation is simply effected by rotating the adjusting screws 23.

To complete the mold, the lend covers or blocks 6 and 7 are placed in position on the points of the through bolts 27, a foot plate 1 28 being provided at each end of the under carriage for them to rest on. Eye bolts 29 are' the means provided for lifting these covers into position. The said foot plates 28 are carried upon the extending pieces 30 attachedto the longitudinal under carriage bearers' 31,v having axle boxes 32 for wheels 33, upon which the structure is supported for transportation. The covers are constructe'd'as in Figs. 5 and 6, toy give free admission to the attendant tor-operate the adjustingscrews 23, and to place `in position the removable parts, such as the wedges The upper outer section'- lmolding-of an end groove in both ends of the molded article, such being necessary in this particular kind of pipe, and the latter being used to seat the ends of the vcore and to. prevent leakage by the use of. al seating strip orpacking therein. Thus, the necessary concentric space is quickly and accurately obtained when these covers are seated in position, and the releasing Wedges 36 and clamping screw-threaded nuts 37 fully tightened up, the mold then being in the position shown both in Figs. 1 and 2 ready to be charged. .l/Vh'ere the reinforcing material 38 is used tol strengthen the molded article, it would be placed in position before the various parts of the mold are joined together, and to keep it from coming into contact with any part of the mold and to allow of the even distribution of the material around the reinforcing material, the rods 39 are inserted through the open cocks 40, which are likewise used for withdrawing the surplus of` air and moisture from the mold, and as the molding operation is taking place the rods are withdrawn. It through the inlet passages 1 that the molding material is passed into the mold. These are connected up, when the mold has been run into this proper position, with the feeding conduits C, as shown in Fig. 1.

A distinctive feature of the wedge shaped bars is the horns 41, which are constructed so as yto take a seating against angle irons 20, so `that while serving as stops When being placed in position, they also answer as a means for insuring their withdrawalwhen adjusting screws 23 are operated for the purpose of collapsing or crowning section 5 of the core.

It is well recognized that various minor changes may be made` in the arrangement, construction and combination of the various elementsl above set forthwithoutavoiding the spirit of our invention, of which onlya preferred form has been illustrated and described, and it is our intention and desire to include allsuch changes and lmodifications within the scope of the appended claims. 5 Y

Having thus described our invention, what we claim as new anddesire to secure by Letters Patent is: Y

1. rl`he combination of an upper mold section and a lower mold section, together making up the body-of the outer shell of a mold, with `two end picesv normallyhhl agaii-is'tv the ends of said sections to close the endsof the mold, bolts fastening-said sections togetliera'nd additional bolts fastening said end pieces in position, eaclrbolt being provided 'at one end' withl a tightening naiase nut and at the other end with a slot and transverse wedge to facilitate fastening and unfastening the aforesaid parts. Y

2. In combination with the sectional outer part of a mold and the sectional hollow core thereof',l a pair of end pieces fitting against the ends o said outer part and said core to complete said mold and grooved to receive the ends of said core and bolts passing through said end pieces longitudinally of said mold to fasten the foregoing parts together, said bolts being provided with tightening means and with additional means for facilitating attachment and detachment.

3. A mold comprising an outer part consisting of an upper and a lower section, detachable means for securing said sections together, a core and cnd pieces in combina/f tion with a supporting truck receiving the lower section and links pivoted to Said lower section and truck whereby said mold may be swung from its horizontal position on said truck to a vertical position on the ground.

i. A mold having trunnions, in combina tion with a supporting truck having lateralpivot pins and a pair of links extending from said trunnions to said pins and; per- 5. A mold having trunmons, 1n com livinai tion with a supporting truck having lateral pivot pins, a pair of said trunnions to said ivot pins and ipermitting said moldV to e swung frox'nf its horizontal position on said truck to anjfu right position on the ground and an additional pair of links attached to said trunnions and detachably connected at their other ends to said truck, in order that they may be freed from the latter and used as handles for turning said mold into an' upright position or back again into its rposition on the truck. l

In testimony whereof, we have signedgour naines to `this specification in the presence of two subscribing witnesses.

lVitnesses JOHN JASPER STONE, MARY LARKIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner o! atcntl.,

Washington. D. C."

y ...iup e inks extending `from v 

